/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:33:43,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:33:43,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:33:43,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:33:43,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:33:43,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:33:43,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:33:43,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:33:43,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:33:43,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:33:43,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:33:43,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:33:43,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:33:43,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:33:43,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:33:43,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:33:43,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:33:43,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:33:43,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:33:43,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:33:43,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:33:43,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:33:43,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:33:43,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:33:43,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:33:43,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:33:43,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:33:43,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:33:43,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:33:43,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:33:43,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:33:43,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:33:43,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:33:43,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:33:43,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:33:43,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:33:43,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:33:43,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:33:43,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:33:43,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:33:43,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:33:43,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:33:43,340 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:33:43,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:33:43,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:33:43,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:33:43,343 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:33:43,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:33:43,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:33:43,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:33:43,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:33:43,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:33:43,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:33:43,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:33:43,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:33:43,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:33:43,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:33:43,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:33:43,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:33:43,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:33:43,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:33:43,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:33:43,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:33:43,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:33:43,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:33:43,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:33:43,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:33:43,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:33:43,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:33:43,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:33:43,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:33:43,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:33:43,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:33:43,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:33:43,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:33:43,935 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:33:43,937 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:33:43,938 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-25 04:33:44,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2deee4c/4a7582e49a824e7d9160d4871e6ed5a5/FLAGcf78ded37 [2020-09-25 04:33:44,572 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:33:44,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-25 04:33:44,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2deee4c/4a7582e49a824e7d9160d4871e6ed5a5/FLAGcf78ded37 [2020-09-25 04:33:44,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2deee4c/4a7582e49a824e7d9160d4871e6ed5a5 [2020-09-25 04:33:44,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:33:44,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:33:44,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:33:44,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:33:44,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:33:44,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:33:44" (1/1) ... [2020-09-25 04:33:44,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:44, skipping insertion in model container [2020-09-25 04:33:44,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:33:44" (1/1) ... [2020-09-25 04:33:44,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:33:44,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:33:45,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:33:45,211 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:33:45,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:33:45,259 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:33:45,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:45 WrapperNode [2020-09-25 04:33:45,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:33:45,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:33:45,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:33:45,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:33:45,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:45" (1/1) ... [2020-09-25 04:33:45,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:45" (1/1) ... [2020-09-25 04:33:45,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:45" (1/1) ... [2020-09-25 04:33:45,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:45" (1/1) ... [2020-09-25 04:33:45,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:45" (1/1) ... [2020-09-25 04:33:45,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:45" (1/1) ... [2020-09-25 04:33:45,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:45" (1/1) ... [2020-09-25 04:33:45,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:33:45,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:33:45,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:33:45,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:33:45,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:33:45,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:33:45,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:33:45,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 04:33:45,494 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-09-25 04:33:45,494 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-09-25 04:33:45,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:33:45,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:33:45,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 04:33:45,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:33:45,495 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-09-25 04:33:45,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:33:45,495 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-09-25 04:33:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:33:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:33:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:33:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:33:45,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:33:45,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:33:45,946 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:33:45,947 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-25 04:33:45,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:33:45 BoogieIcfgContainer [2020-09-25 04:33:45,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:33:45,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:33:45,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:33:45,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:33:45,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:33:44" (1/3) ... [2020-09-25 04:33:45,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c61a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:33:45, skipping insertion in model container [2020-09-25 04:33:45,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:45" (2/3) ... [2020-09-25 04:33:45,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c61a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:33:45, skipping insertion in model container [2020-09-25 04:33:45,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:33:45" (3/3) ... [2020-09-25 04:33:45,963 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-09-25 04:33:45,974 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:33:45,984 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:33:46,006 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:33:46,034 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:33:46,035 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:33:46,035 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:33:46,035 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:33:46,035 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:33:46,035 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:33:46,035 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:33:46,036 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:33:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-09-25 04:33:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 04:33:46,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:33:46,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:33:46,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:33:46,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:33:46,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1588916751, now seen corresponding path program 1 times [2020-09-25 04:33:46,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:33:46,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379838933] [2020-09-25 04:33:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:33:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:46,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:46,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:46,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:46,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:33:46,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:33:46,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-09-25 04:33:46,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:46,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:46,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:33:46,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:46,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:33:46,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:33:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:46,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:46,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:33:46,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:46,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:33:46,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:46,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:46,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:46,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:33:46,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379838933] [2020-09-25 04:33:46,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:33:46,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:33:46,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396187744] [2020-09-25 04:33:46,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:33:46,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:33:46,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:33:46,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:33:46,893 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 3 states. [2020-09-25 04:33:47,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:33:47,260 INFO L93 Difference]: Finished difference Result 245 states and 295 transitions. [2020-09-25 04:33:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:33:47,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-25 04:33:47,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:33:47,295 INFO L225 Difference]: With dead ends: 245 [2020-09-25 04:33:47,296 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 04:33:47,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:33:47,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 04:33:47,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-25 04:33:47,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-25 04:33:47,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2020-09-25 04:33:47,375 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 23 [2020-09-25 04:33:47,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:33:47,376 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2020-09-25 04:33:47,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:33:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2020-09-25 04:33:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 04:33:47,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:33:47,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:33:47,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:33:47,382 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:33:47,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:33:47,382 INFO L82 PathProgramCache]: Analyzing trace with hash -119454780, now seen corresponding path program 1 times [2020-09-25 04:33:47,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:33:47,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109441878] [2020-09-25 04:33:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:33:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:47,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:47,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:47,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:33:47,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:33:47,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-09-25 04:33:47,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:47,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:33:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:33:47,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:33:47,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:47,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:33:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:47,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:47,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:47,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:33:47,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:33:47,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:47,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:47,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:47,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:47,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:33:47,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109441878] [2020-09-25 04:33:47,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:33:47,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:33:47,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710006209] [2020-09-25 04:33:47,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:33:47,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:33:47,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:33:47,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:33:47,858 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand 4 states. [2020-09-25 04:33:48,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:33:48,205 INFO L93 Difference]: Finished difference Result 303 states and 342 transitions. [2020-09-25 04:33:48,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:33:48,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-25 04:33:48,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:33:48,209 INFO L225 Difference]: With dead ends: 303 [2020-09-25 04:33:48,209 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 04:33:48,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:33:48,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 04:33:48,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 124. [2020-09-25 04:33:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-25 04:33:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 137 transitions. [2020-09-25 04:33:48,231 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 137 transitions. Word has length 23 [2020-09-25 04:33:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:33:48,231 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 137 transitions. [2020-09-25 04:33:48,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:33:48,231 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 137 transitions. [2020-09-25 04:33:48,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 04:33:48,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:33:48,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:33:48,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:33:48,233 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:33:48,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:33:48,234 INFO L82 PathProgramCache]: Analyzing trace with hash -395870253, now seen corresponding path program 1 times [2020-09-25 04:33:48,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:33:48,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478127873] [2020-09-25 04:33:48,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:33:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:48,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:48,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:48,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:48,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 04:33:48,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:33:48,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-09-25 04:33:48,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:48,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:33:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:33:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:33:48,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:48,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:33:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:48,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:48,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:48,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:33:48,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:33:48,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:48,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:33:48,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478127873] [2020-09-25 04:33:48,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:33:48,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:33:48,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864966473] [2020-09-25 04:33:48,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:33:48,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:33:48,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:33:48,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:33:48,840 INFO L87 Difference]: Start difference. First operand 124 states and 137 transitions. Second operand 5 states. [2020-09-25 04:33:49,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:33:49,190 INFO L93 Difference]: Finished difference Result 240 states and 268 transitions. [2020-09-25 04:33:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:33:49,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-25 04:33:49,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:33:49,193 INFO L225 Difference]: With dead ends: 240 [2020-09-25 04:33:49,193 INFO L226 Difference]: Without dead ends: 135 [2020-09-25 04:33:49,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:33:49,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-25 04:33:49,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 123. [2020-09-25 04:33:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-25 04:33:49,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2020-09-25 04:33:49,210 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 30 [2020-09-25 04:33:49,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:33:49,210 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2020-09-25 04:33:49,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:33:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2020-09-25 04:33:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 04:33:49,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:33:49,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:33:49,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:33:49,217 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:33:49,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:33:49,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1571460690, now seen corresponding path program 1 times [2020-09-25 04:33:49,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:33:49,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300678222] [2020-09-25 04:33:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:33:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:49,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:49,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:49,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:49,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:49,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:54,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:54,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:33:54,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:33:54,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:33:54,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:54,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:33:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 04:33:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:33:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:54,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:33:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:54,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:54,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:54,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:33:54,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:54,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:33:54,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:54,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:54,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 04:33:54,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 04:33:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:54,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:54,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:54,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:33:54,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:33:54,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:54,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:33:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:54,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:54,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 04:33:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:54,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:54,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:54,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:33:54,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:54,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:33:54,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:54,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:33:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:54,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:33:54,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300678222] [2020-09-25 04:33:54,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:33:54,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:33:54,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991492723] [2020-09-25 04:33:54,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:33:54,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:33:54,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:33:54,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:33:54,406 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand 5 states. [2020-09-25 04:33:54,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:33:54,776 INFO L93 Difference]: Finished difference Result 258 states and 287 transitions. [2020-09-25 04:33:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:33:54,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-09-25 04:33:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:33:54,780 INFO L225 Difference]: With dead ends: 258 [2020-09-25 04:33:54,780 INFO L226 Difference]: Without dead ends: 167 [2020-09-25 04:33:54,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:33:54,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-09-25 04:33:54,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 124. [2020-09-25 04:33:54,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-25 04:33:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 136 transitions. [2020-09-25 04:33:54,828 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 136 transitions. Word has length 66 [2020-09-25 04:33:54,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:33:54,832 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 136 transitions. [2020-09-25 04:33:54,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:33:54,832 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 136 transitions. [2020-09-25 04:33:54,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 04:33:54,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:33:54,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:33:54,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:33:54,838 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:33:54,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:33:54,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1243827998, now seen corresponding path program 1 times [2020-09-25 04:33:54,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:33:54,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978212705] [2020-09-25 04:33:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:33:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:54,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:54,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:55,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:55,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:59,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:59,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 04:33:59,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:33:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:33:59,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:59,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:33:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:33:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:33:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:33:59,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:33:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:59,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:59,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:59,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:33:59,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:59,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:33:59,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:59,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:59,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 04:33:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:59,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:59,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:59,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:33:59,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:59,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:33:59,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:59,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:33:59,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:59,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:33:59,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:59,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:33:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:59,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:00,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:00,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:34:00,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:00,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:34:00,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:00,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:34:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:00,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:34:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:34:00,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978212705] [2020-09-25 04:34:00,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:34:00,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:34:00,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793629938] [2020-09-25 04:34:00,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:34:00,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:34:00,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:34:00,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:34:00,020 INFO L87 Difference]: Start difference. First operand 124 states and 136 transitions. Second operand 6 states. [2020-09-25 04:34:00,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:34:00,275 INFO L93 Difference]: Finished difference Result 210 states and 233 transitions. [2020-09-25 04:34:00,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:34:00,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-09-25 04:34:00,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:34:00,278 INFO L225 Difference]: With dead ends: 210 [2020-09-25 04:34:00,278 INFO L226 Difference]: Without dead ends: 132 [2020-09-25 04:34:00,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:34:00,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-25 04:34:00,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-09-25 04:34:00,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-25 04:34:00,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-09-25 04:34:00,288 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 73 [2020-09-25 04:34:00,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:34:00,289 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-09-25 04:34:00,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:34:00,289 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-09-25 04:34:00,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 04:34:00,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:34:00,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:34:00,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:34:00,292 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:34:00,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:34:00,292 INFO L82 PathProgramCache]: Analyzing trace with hash 351512012, now seen corresponding path program 1 times [2020-09-25 04:34:00,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:34:00,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009758202] [2020-09-25 04:34:00,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:34:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:00,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:00,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:00,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:01,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:05,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:05,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 04:34:05,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:34:05,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:34:05,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:05,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:05,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:34:05,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:34:05,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:34:05,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:05,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:34:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:05,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:05,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:05,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:34:05,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:05,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:34:05,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:05,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:05,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:05,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 04:34:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:05,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:05,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:05,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:34:05,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:05,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:34:05,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:05,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:05,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:34:05,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:05,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:05,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 04:34:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:05,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:05,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:05,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:34:05,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:34:05,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:05,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:34:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:05,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:34:05,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009758202] [2020-09-25 04:34:05,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:34:05,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:34:05,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839816494] [2020-09-25 04:34:05,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:34:05,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:34:05,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:34:05,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:34:05,398 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 7 states. [2020-09-25 04:34:05,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:34:05,791 INFO L93 Difference]: Finished difference Result 300 states and 336 transitions. [2020-09-25 04:34:05,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:34:05,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-09-25 04:34:05,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:34:05,796 INFO L225 Difference]: With dead ends: 300 [2020-09-25 04:34:05,796 INFO L226 Difference]: Without dead ends: 190 [2020-09-25 04:34:05,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:34:05,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-25 04:34:05,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 137. [2020-09-25 04:34:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-09-25 04:34:05,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2020-09-25 04:34:05,819 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 76 [2020-09-25 04:34:05,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:34:05,822 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2020-09-25 04:34:05,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:34:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2020-09-25 04:34:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 04:34:05,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:34:05,831 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:34:05,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:34:05,832 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:34:05,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:34:05,832 INFO L82 PathProgramCache]: Analyzing trace with hash -965257955, now seen corresponding path program 2 times [2020-09-25 04:34:05,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:34:05,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231245061] [2020-09-25 04:34:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:34:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:05,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:05,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:05,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:06,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:10,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:10,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:10,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:10,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 04:34:10,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:34:10,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 04:34:10,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:10,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:34:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 04:34:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:34:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:10,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:34:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:10,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:10,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:34:10,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:10,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:34:10,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:10,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:10,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:10,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:10,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 04:34:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:10,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:10,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:34:10,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:10,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:34:10,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:10,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:10,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:10,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:34:10,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:34:10,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 04:34:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:10,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:10,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:10,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:34:10,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:10,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:34:10,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:10,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:34:10,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:10,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 04:34:11,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231245061] [2020-09-25 04:34:11,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:34:11,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:34:11,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126619345] [2020-09-25 04:34:11,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:34:11,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:34:11,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:34:11,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:34:11,010 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand 7 states. [2020-09-25 04:34:11,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:34:11,512 INFO L93 Difference]: Finished difference Result 284 states and 316 transitions. [2020-09-25 04:34:11,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:34:11,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-09-25 04:34:11,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:34:11,515 INFO L225 Difference]: With dead ends: 284 [2020-09-25 04:34:11,515 INFO L226 Difference]: Without dead ends: 187 [2020-09-25 04:34:11,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:34:11,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-25 04:34:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 144. [2020-09-25 04:34:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 04:34:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 157 transitions. [2020-09-25 04:34:11,532 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 157 transitions. Word has length 83 [2020-09-25 04:34:11,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:34:11,535 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 157 transitions. [2020-09-25 04:34:11,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:34:11,535 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 157 transitions. [2020-09-25 04:34:11,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 04:34:11,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:34:11,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:34:11,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:34:11,540 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:34:11,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:34:11,541 INFO L82 PathProgramCache]: Analyzing trace with hash -914480437, now seen corresponding path program 3 times [2020-09-25 04:34:11,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:34:11,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685412846] [2020-09-25 04:34:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:34:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:11,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:11,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:11,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:16,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:16,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-25 04:34:16,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:34:16,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:34:16,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:16,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:16,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:34:16,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:34:16,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 04:34:16,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:16,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:34:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:16,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:16,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:16,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:34:16,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:16,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:34:16,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:16,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:16,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:16,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 04:34:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:16,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:16,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:16,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:34:16,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:16,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:34:16,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:16,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:16,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:34:16,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:34:16,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:34:16,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:16,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 04:34:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:16,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:16,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:16,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:34:16,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:34:16,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:16,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:34:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 04:34:16,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685412846] [2020-09-25 04:34:16,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:34:16,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:34:16,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876597318] [2020-09-25 04:34:16,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:34:16,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:34:16,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:34:16,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:34:16,739 INFO L87 Difference]: Start difference. First operand 144 states and 157 transitions. Second operand 8 states. [2020-09-25 04:34:17,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:34:17,084 INFO L93 Difference]: Finished difference Result 188 states and 205 transitions. [2020-09-25 04:34:17,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:34:17,086 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-09-25 04:34:17,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:34:17,087 INFO L225 Difference]: With dead ends: 188 [2020-09-25 04:34:17,087 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:34:17,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:34:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:34:17,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:34:17,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:34:17,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:34:17,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2020-09-25 04:34:17,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:34:17,091 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:34:17,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:34:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:34:17,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:34:17,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:34:17,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:34:17,429 INFO L271 CegarLoopResult]: At program point elem_existsENTRY(lines 9 15) the Hoare annotation is: true [2020-09-25 04:34:17,429 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 04:34:17,429 INFO L268 CegarLoopResult]: For program point L9(lines 9 15) no Hoare annotation was computed. [2020-09-25 04:34:17,429 INFO L268 CegarLoopResult]: For program point elem_existsFINAL(lines 9 15) no Hoare annotation was computed. [2020-09-25 04:34:17,431 INFO L268 CegarLoopResult]: For program point L9-1(lines 9 15) no Hoare annotation was computed. [2020-09-25 04:34:17,431 INFO L268 CegarLoopResult]: For program point L11-3(lines 11 13) no Hoare annotation was computed. [2020-09-25 04:34:17,431 INFO L268 CegarLoopResult]: For program point L11-4(line 11) no Hoare annotation was computed. [2020-09-25 04:34:17,431 INFO L268 CegarLoopResult]: For program point L11-5(line 11) no Hoare annotation was computed. [2020-09-25 04:34:17,432 INFO L264 CegarLoopResult]: At program point L11-6(lines 11 13) the Hoare annotation is: (let ((.cse0 (<= elem_exists_~size |elem_exists_#in~size|))) (or (and (<= elem_exists_~size (+ |elem_exists_#in~size| elem_exists_~i~0)) .cse0) (and .cse0 (<= 1 |elem_exists_#in~size|)))) [2020-09-25 04:34:17,433 INFO L268 CegarLoopResult]: For program point L11-7(lines 11 13) no Hoare annotation was computed. [2020-09-25 04:34:17,433 INFO L268 CegarLoopResult]: For program point elem_existsEXIT(lines 9 15) no Hoare annotation was computed. [2020-09-25 04:34:17,433 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 04:34:17,433 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 04:34:17,434 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 04:34:17,435 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 04:34:17,435 INFO L268 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-09-25 04:34:17,435 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-25 04:34:17,435 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 04:34:17,435 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 04:34:17,435 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:34:17,436 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 04:34:17,436 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:34:17,436 INFO L271 CegarLoopResult]: At program point insertENTRY(lines 5 8) the Hoare annotation is: true [2020-09-25 04:34:17,436 INFO L268 CegarLoopResult]: For program point insertFINAL(lines 5 8) no Hoare annotation was computed. [2020-09-25 04:34:17,436 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 04:34:17,436 INFO L268 CegarLoopResult]: For program point L5(lines 5 8) no Hoare annotation was computed. [2020-09-25 04:34:17,436 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 04:34:17,437 INFO L268 CegarLoopResult]: For program point L5-1(lines 5 8) no Hoare annotation was computed. [2020-09-25 04:34:17,437 INFO L268 CegarLoopResult]: For program point insertEXIT(lines 5 8) no Hoare annotation was computed. [2020-09-25 04:34:17,437 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:34:17,437 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 04:34:17,437 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 04:34:17,437 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:34:17,437 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 56) no Hoare annotation was computed. [2020-09-25 04:34:17,438 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 04:34:17,439 INFO L268 CegarLoopResult]: For program point L52-1(line 52) no Hoare annotation was computed. [2020-09-25 04:34:17,439 INFO L264 CegarLoopResult]: At program point L52-2(line 52) the Hoare annotation is: false [2020-09-25 04:34:17,439 INFO L268 CegarLoopResult]: For program point L52-3(line 52) no Hoare annotation was computed. [2020-09-25 04:34:17,439 INFO L268 CegarLoopResult]: For program point L52-4(line 52) no Hoare annotation was computed. [2020-09-25 04:34:17,440 INFO L268 CegarLoopResult]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2020-09-25 04:34:17,440 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-25 04:34:17,440 INFO L268 CegarLoopResult]: For program point L44-4(line 44) no Hoare annotation was computed. [2020-09-25 04:34:17,440 INFO L264 CegarLoopResult]: At program point L44-5(lines 44 48) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-25 04:34:17,440 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-25 04:34:17,440 INFO L268 CegarLoopResult]: For program point L36-3(lines 36 39) no Hoare annotation was computed. [2020-09-25 04:34:17,441 INFO L268 CegarLoopResult]: For program point L36-4(line 36) no Hoare annotation was computed. [2020-09-25 04:34:17,441 INFO L268 CegarLoopResult]: For program point L36-5(line 36) no Hoare annotation was computed. [2020-09-25 04:34:17,441 INFO L264 CegarLoopResult]: At program point L36-6(lines 36 39) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-25 04:34:17,441 INFO L268 CegarLoopResult]: For program point L36-7(lines 36 39) no Hoare annotation was computed. [2020-09-25 04:34:17,441 INFO L268 CegarLoopResult]: For program point L28-2(lines 28 32) no Hoare annotation was computed. [2020-09-25 04:34:17,441 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-25 04:34:17,442 INFO L268 CegarLoopResult]: For program point L28-4(line 28) no Hoare annotation was computed. [2020-09-25 04:34:17,442 INFO L264 CegarLoopResult]: At program point L28-5(lines 28 32) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-25 04:34:17,442 INFO L268 CegarLoopResult]: For program point L28-6(lines 28 32) no Hoare annotation was computed. [2020-09-25 04:34:17,442 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 04:34:17,443 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-25 04:34:17,443 INFO L268 CegarLoopResult]: For program point L45-3(lines 45 47) no Hoare annotation was computed. [2020-09-25 04:34:17,443 INFO L268 CegarLoopResult]: For program point L45-4(line 45) no Hoare annotation was computed. [2020-09-25 04:34:17,443 INFO L268 CegarLoopResult]: For program point L45-5(line 45) no Hoare annotation was computed. [2020-09-25 04:34:17,443 INFO L264 CegarLoopResult]: At program point L45-6(lines 45 47) the Hoare annotation is: false [2020-09-25 04:34:17,443 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 04:34:17,444 INFO L268 CegarLoopResult]: For program point L29-3(lines 29 31) no Hoare annotation was computed. [2020-09-25 04:34:17,444 INFO L268 CegarLoopResult]: For program point L29-4(line 29) no Hoare annotation was computed. [2020-09-25 04:34:17,444 INFO L268 CegarLoopResult]: For program point L29-5(line 29) no Hoare annotation was computed. [2020-09-25 04:34:17,444 INFO L264 CegarLoopResult]: At program point L29-6(lines 29 31) the Hoare annotation is: false [2020-09-25 04:34:17,444 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 04:34:17,444 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-25 04:34:17,445 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 56) no Hoare annotation was computed. [2020-09-25 04:34:17,445 INFO L264 CegarLoopResult]: At program point L46-2(line 46) the Hoare annotation is: false [2020-09-25 04:34:17,445 INFO L268 CegarLoopResult]: For program point L46-3(line 46) no Hoare annotation was computed. [2020-09-25 04:34:17,445 INFO L268 CegarLoopResult]: For program point L46-4(line 46) no Hoare annotation was computed. [2020-09-25 04:34:17,445 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 04:34:17,445 INFO L268 CegarLoopResult]: For program point L38-1(line 38) no Hoare annotation was computed. [2020-09-25 04:34:17,445 INFO L268 CegarLoopResult]: For program point L38-2(line 38) no Hoare annotation was computed. [2020-09-25 04:34:17,446 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 04:34:17,446 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 16 56) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-25 04:34:17,446 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-25 04:34:17,446 INFO L264 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: false [2020-09-25 04:34:17,446 INFO L268 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-09-25 04:34:17,447 INFO L268 CegarLoopResult]: For program point L30-4(line 30) no Hoare annotation was computed. [2020-09-25 04:34:17,447 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 04:34:17,447 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 25) no Hoare annotation was computed. [2020-09-25 04:34:17,447 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 04:34:17,448 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-25 04:34:17,448 INFO L264 CegarLoopResult]: At program point L22-6(lines 22 25) the Hoare annotation is: (<= main_~n~0 0) [2020-09-25 04:34:17,448 INFO L268 CegarLoopResult]: For program point L22-7(lines 22 25) no Hoare annotation was computed. [2020-09-25 04:34:17,448 INFO L268 CegarLoopResult]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2020-09-25 04:34:17,448 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-25 04:34:17,449 INFO L268 CegarLoopResult]: For program point L40-4(line 40) no Hoare annotation was computed. [2020-09-25 04:34:17,449 INFO L264 CegarLoopResult]: At program point L40-5(lines 40 49) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-25 04:34:17,449 INFO L268 CegarLoopResult]: For program point L40-6(lines 40 49) no Hoare annotation was computed. [2020-09-25 04:34:17,449 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 04:34:17,449 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 04:34:17,450 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 04:34:17,450 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 04:34:17,450 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-25 04:34:17,450 INFO L268 CegarLoopResult]: For program point L41-2(line 41) no Hoare annotation was computed. [2020-09-25 04:34:17,450 INFO L268 CegarLoopResult]: For program point L41-3(lines 41 43) no Hoare annotation was computed. [2020-09-25 04:34:17,451 INFO L268 CegarLoopResult]: For program point L41-4(line 41) no Hoare annotation was computed. [2020-09-25 04:34:17,451 INFO L268 CegarLoopResult]: For program point L41-5(line 41) no Hoare annotation was computed. [2020-09-25 04:34:17,451 INFO L268 CegarLoopResult]: For program point L41-7(line 41) no Hoare annotation was computed. [2020-09-25 04:34:17,451 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 04:34:17,451 INFO L268 CegarLoopResult]: For program point L41-8(line 41) no Hoare annotation was computed. [2020-09-25 04:34:17,452 INFO L268 CegarLoopResult]: For program point L41-9(lines 41 43) no Hoare annotation was computed. [2020-09-25 04:34:17,452 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 04:34:17,452 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 04:34:17,452 INFO L268 CegarLoopResult]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2020-09-25 04:34:17,452 INFO L268 CegarLoopResult]: For program point L50-3(line 50) no Hoare annotation was computed. [2020-09-25 04:34:17,452 INFO L268 CegarLoopResult]: For program point L50-4(line 50) no Hoare annotation was computed. [2020-09-25 04:34:17,453 INFO L264 CegarLoopResult]: At program point L50-5(lines 50 54) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~n~0 0)) [2020-09-25 04:34:17,453 INFO L268 CegarLoopResult]: For program point L50-6(lines 50 54) no Hoare annotation was computed. [2020-09-25 04:34:17,453 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 04:34:17,453 INFO L264 CegarLoopResult]: At program point L42-1(line 42) the Hoare annotation is: false [2020-09-25 04:34:17,453 INFO L268 CegarLoopResult]: For program point L42-2(line 42) no Hoare annotation was computed. [2020-09-25 04:34:17,453 INFO L268 CegarLoopResult]: For program point L42-3(line 42) no Hoare annotation was computed. [2020-09-25 04:34:17,453 INFO L268 CegarLoopResult]: For program point L42-4(line 42) no Hoare annotation was computed. [2020-09-25 04:34:17,454 INFO L268 CegarLoopResult]: For program point L42-5(line 42) no Hoare annotation was computed. [2020-09-25 04:34:17,454 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 04:34:17,454 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 04:34:17,454 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 04:34:17,454 INFO L268 CegarLoopResult]: For program point L51-3(lines 51 53) no Hoare annotation was computed. [2020-09-25 04:34:17,454 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 04:34:17,454 INFO L268 CegarLoopResult]: For program point L51-4(line 51) no Hoare annotation was computed. [2020-09-25 04:34:17,455 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-09-25 04:34:17,455 INFO L268 CegarLoopResult]: For program point L51-5(line 51) no Hoare annotation was computed. [2020-09-25 04:34:17,455 INFO L264 CegarLoopResult]: At program point L51-6(lines 51 53) the Hoare annotation is: false [2020-09-25 04:34:17,455 INFO L268 CegarLoopResult]: For program point L2-1(line 2) no Hoare annotation was computed. [2020-09-25 04:34:17,456 INFO L268 CegarLoopResult]: For program point L2-3(line 2) no Hoare annotation was computed. [2020-09-25 04:34:17,456 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2020-09-25 04:34:17,456 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2020-09-25 04:34:17,456 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2020-09-25 04:34:17,457 INFO L268 CegarLoopResult]: For program point L2(line 2) no Hoare annotation was computed. [2020-09-25 04:34:17,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:34:17 BoogieIcfgContainer [2020-09-25 04:34:17,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:34:17,491 INFO L168 Benchmark]: Toolchain (without parser) took 32577.48 ms. Allocated memory was 137.9 MB in the beginning and 425.7 MB in the end (delta: 287.8 MB). Free memory was 101.1 MB in the beginning and 291.4 MB in the end (delta: -190.4 MB). Peak memory consumption was 97.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:34:17,492 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 04:34:17,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.75 ms. Allocated memory is still 137.9 MB. Free memory was 100.4 MB in the beginning and 89.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-25 04:34:17,494 INFO L168 Benchmark]: Boogie Preprocessor took 143.32 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 89.3 MB in the beginning and 178.0 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-25 04:34:17,495 INFO L168 Benchmark]: RCFGBuilder took 549.70 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 148.9 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-09-25 04:34:17,496 INFO L168 Benchmark]: TraceAbstraction took 31531.57 ms. Allocated memory was 200.8 MB in the beginning and 425.7 MB in the end (delta: 224.9 MB). Free memory was 148.2 MB in the beginning and 291.4 MB in the end (delta: -143.2 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-09-25 04:34:17,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 344.75 ms. Allocated memory is still 137.9 MB. Free memory was 100.4 MB in the beginning and 89.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.32 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 89.3 MB in the beginning and 178.0 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 549.70 ms. Allocated memory is still 200.8 MB. Free memory was 178.0 MB in the beginning and 148.9 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31531.57 ms. Allocated memory was 200.8 MB in the beginning and 425.7 MB in the end (delta: 224.9 MB). Free memory was 148.2 MB in the beginning and 291.4 MB in the end (delta: -143.2 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: n <= x && x <= 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: n <= x && x <= 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: n <= x && n <= 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: n <= x && x <= 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: n <= x && x <= 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (size <= \old(size) + i && size <= \old(size)) || (size <= \old(size) && 1 <= \old(size)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 31.0s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 885 SDtfs, 775 SDslu, 1184 SDs, 0 SdLazy, 1499 SolverSat, 132 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 228 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 71 PreInvPairs, 82 NumberOfFragments, 91 HoareAnnotationTreeSize, 71 FomulaSimplifications, 174 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 22 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 27.3s InterpolantComputationTime, 464 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 456 ConstructedInterpolants, 0 QuantifiedInterpolants, 50620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 32/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...